Place the soaked barley with the water, lamb, peppercorns and bay leaf in the pressure cooker and cook for 20 mins on slow after 1 whistle.
Once the pressure cooker has cooled, remove the lamb pieces, debone and shred the meat. Set aside. Remove and discard the bay leaf.
Warm the olive oil in a deep pan or pot and add the onions. Cook on low heat till they're caramelised and soft. Add the garlic and cook for another 20 seconds.
Now drop in the turnips, paprika, thyme and a little water from the cooked barley, cover and cook till they're almost done. You may need to add a little water in between to prevent burning.
Then add the cinnamon powder, Worcestershire and soy sauces followed by the barley, lamb and any stock it may have. Mix well and add a little more water and salt if needed. Bring to a gentle simmer. Cook for 5 minutes more and serve hot.